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discovery by Fremy

Frémy investigated osmic acid, ozone, and compounds of iron, tin, and lead, among others. He sought to isolate free fluorine and discovered
hydrogen fluoride and a series of its salts. He studied the colouring matters of leaves and flowers and the composition of animal substances. He contributed to the technology of iron, steel, sulfuric acid, glass, paper, and, in particular, the...

fluorine production

Hydrogen fluoride is employed in the preparation of numerous inorganic and organic fluorine compounds of commercial importance—for example, sodium aluminum fluoride (Na
3AlF
6), used as an electrolyte in the electrolytic smelting of aluminum metal. A solution of
hydrogen fluoride gas in water is called hydrofluoric acid, large quantities of which are consumed in...

hydrogen bonding

...links pairs of oxygen ions. Water is found in many different crystal structures, but they all have the feature that the hydrogen atoms sit between pairs of oxygen. Another hydrogen-bonded solid is
hydrogen fluoride (HF), in which the hydrogen atom (proton) links pairs of fluorines.

polarity

...gas consists of F
2 molecules in which the fluorine atoms are bound together by sharing a pair of electrons, one contributed by each atom. In addition, hydrogen and fluorine react to form
hydrogen fluoride, which contains HF molecules. The hydrogen and fluorine atoms are bound together by a pair of electrons, one electron contributed by the hydrogen atom and one by the fluorine atom....